Procaryotic Genera
   Domain "Bacteria" Woese et al. 1990
     Phylum Bacteroidetes Garrity and Holt 2001 see Phylum Bacteroidetes Krieg et al. 2012
       Class "Bacteroidetes" Krieg et al., 2012 [monotypic] see Class Bacteroidia Krieg et al., 2012
         Order "Bacteroidales" Krieg 2012 see Order Bacteroidales Krieg 2012
           Family "Porphyromonadaceae" nom. inval. see Family Porphyromonadaceae Krieg 2012
             1 Genus Porphyromonas Shah and Collins 1988
             2 Genus Dysgonomonas Hofstad et al. 2000